Improvement in concentrating sulphuric acid



'ASHWORTH & EATON.

I Concentrating Sulphuric Acid.

No. 62,919. Patented Mar. 19, 1867;

Inventor, witnesses? 49% be M awzg, yffw-zzm AM. PHOT0-LITHO .CO.NM (OSBURNE'S PROCESSJ gtaiteb DANIEL ASHWOHTH AND ROBERT BEATON, OF WOBUPN, MASSACHUSETTS. Letters Patent No. 62,919, dated ZiIarch 19, 1867; antcdated ilIarch 12, 1867. I

IMPROVEMENT IN OONGENTRATING SULPHURIG ACID.

TO ALL WHOM IT MAY CONCERN: I

Be it known that we, DANIEL ASIIWORTH and ROBERT B. EATON, of Woburn, "in the county of Middlesex, andStnte of Massachusetts, have invented a new and improved Method of Condensing or Rectifying Oil of vitriol or other acids or liquids, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, making a. part of this specification, in which- Figure 1 represents a vertical longitudinal section of the apparatus used incur invention.

Figure 2 represents a plan view; 7

Our itveniicn consists in the (niployntent of a series of glass retorts, communicating directly with each other, and through which the vitriol or other acid or liquid isipassed, in combinatio'nwith a furnace or heating apparatus. Heretofore the process of condensing or rectifying oil of vitriol has been conducted in single retortsmade of platinum or glass, into which the vitriol-is first placed and then removed, necessitating a tedious and laborious operation. The objection to platinum retorts is their expense and the necessity of repairing them .after some use. They also require a considerable amount of fuel to obtain the necessary degree of heat for carrying on the process of condensation. The glass retorts which have been used are liable to. break and injure the workmen employed in filling and emptying them -a process requiring much labor and time. A large amount of fuel is also required in heating the same. These objections are believed to be obviated in our'invention, the oil of vitriol being passed from the oil of vitriol chamber directly into the leaden pans, and from thence'into the series of glass retorts through which it passes successively, and is conducted into a proper receptacle. The oil of vitriol'is partially condensed in the leaden pan, the products of combustion from the furnace passing under the same after heating the glass retorts. Y

Referringyto the drawings, A represents the furnace, of any convenient construction, over which is a diaphragm, U, which may be arched or fiat, and is perforated, as shown, to admit of the heating of therctorts G, without exposing them to the full power of the flame. The diaphragm C may extend any desired distance towards the rear of the flue, or it may be dispensed with altogether if desiirablel At the upper part of the furnace, and forming the bottom of a box or casing in which the retorts Gare placerh ijs a partition, D, having openings in which are fitted the lower parts of the retorts G, by which means the latter are exposed to the'heat of the furnace. G G G represent a series of glass retorts, of which there may be as many as desired, the neck of the one at the rear end fitting upon a tube that enters the leaden pan E, and each connecting with the other, so that the liquid in process of condensation will pass freely from one to the other, and out of the last of the series. The retorts are supported upon bars f, extending transversely across the casing, so as-to prevent their resting upon the partition D. F is a cover to the casing containing the retorts, and E is the leaden pan, one or more being used, in \vhich'is kept asupply of oil of vitriol. B is the chimney. The products of combustion in the furnace, after heating the retorts, pass under the leaden pan E, which they also heat sutficiently to partially condense the oil of vitriol contained therein.- Instead of subjecting the glass. retorts to the direct heat of a furnace, they may be placed in a pot or basin of iron, containing sand, upon which the retorts may rest, and through which the heat is transmitted. w

Having thus described our invention, what we claim as new, and desireto secure by Letters Patent, is-

1. Condensing orrectifying oil, ofvit-riol by passing the same through a series of glass retorts, in combi nation with: a heating apparatus, substantially as described. 7

Q. Weclainrthe combir. ation of a series of glass-retorts G, with the pan E and furnace A, substantially as and for the purpose specified. 1

In testimony whereof wehav'e signed our names to this specification in the presence of two subscribing witnesses.

' DANIEL ASHWORTH,

ROBT. B. EATON.

Witnesses:

PARKER L. Ooxvansa, SHERMAN CONVERSE. 

